AS Name Org Name IPv4Prefixes IPv6Prefixes IPv4 NUMs IPv6 NUMs(/64) Registry Region Looking Glass
ALEFNULA Alef Nula a.s. 3 1 1,024 65,536 Czech
1,024 IPv4 Addresses
CIDR Description IP Num
193.239.0.0/23 Alef Nula a.s. 512
193.239.0.0/22 Alef Nula a.s. 1024
193.239.2.0/23 Alef Nula a.s. 512
CIDR Description IP NUMs(prefix /64)
2001:67c:21d0::/48 Alef Nula a.s. 65536
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS5588 GTSCE - T-Mobile Czech Republic a.s., CZ Czech 1,377,024 81,604,902,912 IPv4 IPv4 IPv6 IPv6
AS5610 O2-CZECH-REPUBLIC - O2 Czech Republic, a.s., CZ Czech 1,552,640 47,244,640,256 IPv4 IPv4
IP Address Domain NUMs Domains
193.239.2.3 3 mail.alefnula.cz
193.239.2.4 2 alef0.sk
193.239.2.9 42 alef.alefnula.cz
193.239.2.11 2 mail2.alef.com
193.239.2.33 6 b2b.alef.com
193.239.2.37 1 pmp.alef.com
193.239.2.41 1 sip.alef.com
193.239.2.44 1 aleftraining.net
193.239.2.45 4 autodiscover.alef.com
193.239.2.46 1 bugzilla.alef.com
as-block:       AS33792 - AS35839
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2018-11-22T15:27:34Z
last-modified:  2018-11-22T15:27:34Z
source:         RIPE



aut-num:        AS35096
as-name:        ALEFNULA
import:         from AS12767 accept ANY
import:         from AS2819 accept ANY
import:         from AS5588 accept ANY
import:         from AS5610 accept ANY
export:         to AS12767 announce AS35096
export:         to AS2819 announce AS35096
export:         to AS5588 announce AS35096
export:         to AS5610 announce AS35096
org:            ORG-ANa3-RIPE
default:        to AS12767
admin-c:        DN797-RIPE
tech-c:         PV1961-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ALEFCZ-MNT
created:        2005-06-02T13:07:44Z
last-modified:  2019-12-04T11:18:51Z
source:         RIPE # Filtered
sponsoring-org: ORG-Ra2-RIPE

organisation:   ORG-ANa3-RIPE
org-name:       Alef Nula a.s.
org-type:       OTHER
address:        Pernerova 691/42
address:        Prague 8
address:        186 00
address:        Czech Republic
phone:          +420 225090111
abuse-c:        AR30127-RIPE
admin-c:        PV1961-RIPE
tech-c:         PV1961-RIPE
admin-c:        MB41014-RIPE
tech-c:         MB41014-RIPE
mnt-ref:        ALEFCZ-MNT
mnt-by:         ALEFCZ-MNT
created:        2005-05-23T14:13:09Z
last-modified:  2018-05-25T13:49:26Z
source:         RIPE # Filtered

person:         Dalibor Naus
address:        ALEF NULA a.s.
address:        Pernerova 691/42
address:        Prague 8
address:        186 00
address:        Czech Republic
phone:          +420 2 250 090 111
fax-no:         +420 2 250 090 112
nic-hdl:        DN797-RIPE
mnt-by:         ALEFCZ-MNT
created:        2005-05-23T14:04:00Z
last-modified:  2018-05-25T13:52:15Z
source:         RIPE # Filtered

person:         Petr Vacha
address:        ALEF NULA a.s.
address:        Pernerova 691/42
address:        Prague 8
address:        186 00
address:        Czech Republic
phone:          +420 2 250 090 111
fax-no:         +420 2 250 090 112
nic-hdl:        PV1961-RIPE
mnt-by:         ALEFCZ-MNT
created:        2005-05-23T14:04:00Z
last-modified:  2018-05-25T13:53:09Z
source:         RIPE # Filtered